One of the greatest threats to native flora and fauna (plant & animal) communities is invasive species as it further contributes to habitat loss. These plants and other organisms are those that have been introduced from other geographical regions. In general, invasive plants are those that out compete their native counterparts due largely to the absence of diseases and natural predators. Often times these species do not provide suitable habitat or nutrition for native wildlife as well as occupying area that would provide suitable conditions. At this point in time, approximately 27% of plants growing wild in Illinois are introduced species. Most of these introductions have occurred intentionally for commercial purposes such as alternative livestock feed or ornamentals, and on occasion accidentally. Once these plants are established they spread rapidly by being transported by humans, animals, water, and sales.